The Importance of Nutritional Supplements During Pregnancy Pregnancy is a very important stage. During this period, attention should be paid to a reasonable diet and appropriate exercise to ensure the healthy development of the fetus. In order to better supplement nutrition, many expectant mothers will choose maternal milk powder to supplement nutrition. However, there are many types of milk powder for pregnant women on the market. How to choose the milk powder for pregnant women that suits you is a problem. This article will compare Biostime and Anman maternal milk powder and analyze their nutritional supplements during pregnancy.